Paper-making machine.



G. McAULAY.

PAPER MAKING MACHINE.

APPLICATION FILED 0501,191

Patented Mar. 4,1919.

4 SHEETS-SHEET 1.

7% IN VEN TOR. [mfg 92m M 67/} A TTO NEYS.

G. McAULAY.

PAPER MAKING MACHINE.

APPLICATION FILED 050.1.1911.

Patented Mar. 4,1919. 4 SHEETgj-SHEET 2 fla W M ATTOR EYS,

G. McAULAY.

,PAPER MAKING MACHINE.

APPLICATION FlLED DEC. 7. 1917.

Patented Mar. 4,1919.

4 SHEETS-SHEET 3- Q l%iNTOR 0 0a BY ATTORN Y5.

G. lVIcAULAY.

PAPER MAKING MACHINE.

APPUCATION FILED 020.7.1917.

Patented Mar. 4, 1919.

4 SHEETS-SHEET 4.

INV ENTO R 7% M ATTORNEYS,

' box will be equalized or distributed, thereby extending transversely across GEORGE MGA'ULAY, or :amuronn FALLS,

MAINE, ASSIGNOR T0 INTERNATIONAL PAPER COMPANY, A CORPORATION OF NEW YORK.

PAPEBFMAKING MACHINE.

Specification of Letters Patent.

Patented Mar. 4, 1919.

Application filed December 7, 1917. Serial No. 205,974.

T 0 all whom it may concern:

Be it known that I, GEORGE citizen of the United States,

MoAULAY, a residing at Rumford Falls, in the county of Oxford and have invented certain new and useful Improvements in Paper-Making State of Maine,

the following is a speci- Machines, of which had therein to the fication, reference being accompanying drawing.

This invention relates to paper making; machines of the type in which the paper pulp is delivered onto an endless traveling of a paper maklng machine having my invention applied thereto, and showing par-' belt or apron formed of wire fabric, and known as the wire, the upper stretch of which is suitably supported so as to present a flat longitudinally traveling surface upon which the wet pulp spreads out in the form of a layer, the water being sucked out of the pulp from beneath by means of a suction box or boxes underlying the belt. These suction boxes are usually open-top wooden boxes the under side of the belt and connected with a suction pump by which a partial vacuum is maintained, and as they suck the water down through the meshes of the belt, the latter is drawn down with considerable pressure on the boxes, with the result that the strands of wire will cut channels or grooves in the edges of the boxes and the belt will be subjected to considerable wear.

Various expedients have been resorted to to overcome: this objectionable action but have not as far as I am aware, been attended with satisfactory results.

In accordance with my invention I remedy the difficulty by so mounting the suction box or boxes that it may be moved at one end relatively to the belt and in the direction of travel of the same, about an axis distant from, or at, or adjacent to its other end, and in connection with the box thus mounted, I provide mechanical means for effecting the movement of the movable end of the box periodically, whereby the angular relation of the box to the traveling belt will be constantly changed. As a result of this operation, the points on the box along which the strands of wire of the belt travel, will be continuously changed and the wear on the preventing the formation of grooves in the edges of the box and reducing the wear on;

the belt to a minimum.

. from the pulp,

Mechanism of difierent forms and differently operated ma be employed for moving the box, but I pre er to usefor this purpose power operated mechanism, which may be driven from the driving mechanism-of the paper machine or from a separate motor, and which is operatively connected with the box or boxes at one end, and so formed and operated that-the boxes will be constantly but slowly shifted at one end back and forth.

In the accompanying drawings:

Figure 1 is a side elevation of the wet end ticularly the manner of supporting the suction boxes.

Fig. 2 is a similarview of the opposite side of the machine showing'how' the suction boxes are supported at their opposite ends.

Fig. 3 is a top plan view of the parts shown in Fig. 1.

Fig. 4 is elevation on an enlarged scale through-the machine on the line H of Fig. 1 showing particularly the form of the supports for the two ends of the suction boxes.

Fig. 5 is a longitudinal vertical sectional elevation taken on the line a-a of Fig. 4.

The drawings show that portion of the wet end of a Fourdrinier paper making machine where the wet pulp, "supported on the traveling forming belt, is subjectedto the action of suction. boxes to suck out the water he numeral 1 designating the frame of the machine comprising as usual two. longitudinally extending side frame bars or rails 2 supported by standards 3.

4 designates the usual endless traveling forming belt or wire which passes at one end around the couch roll 5, and the upper stretch of which is suitably supported so as to present a flat traveling surface onto which the mixture of pulp and watergs delivered and assumes the form of a flat pulp layer.

6 designates the rear portion of the deckle straps guided at one end over guide pulleys 7, the lower stretches of which straps travel with and rest upon the wire belt at the side edges cape of the pulp at these points.

8 designates the suction boxes, in the construction shown there are two of the same and act to prevent the 'es of which" a transverse vertical sectional I groups, one group 8 extending transversely across the under side of the belt beneath the deckle straps, and the other group 8 extending beneath the belt beyond the deckle straps, the upper sides of the boxes lying closely against the under side of the belt, so that when the air is exhausted from the boxes by the usual suction pump connected with the boxes through the customary connections 9, the water of the wet pulp will be drawn downward through the wire belt and will enter the suction boxes and be discharged therefrom in the customary manner. The suction boxes are, in accordance with my invention, supported in such manner that one end of the boxes may be moved back and forth in the direction of travel of the belt about an axis located at or adjacent the opposite ends, and in this manner the angular relation. of the boxes to the direction of travel changed. The mounting of the boxes to permit this action may be effected in vari: ous ways, but I prefer to adopt the con struction shown in the drawings wherein it will be seen that there is arranged at one side of the machine, a horizontal longitudinally movable slide 10 movable in a hori-- zontal guideway 11 in a hanger bracket 12 supported from the siderail of the machine frame, which slide is operatively connected with and gives support to one end of the group 8 of suction boxes, a similar slide 1O similarly guided and sustained by a hanger 12 being operatively connected with and giving support to one end of the other group of boxes. As shown more particularly in Figs 3 and 4, the slide 10 is provided with four. sockets 14', each U-shape in cross section, in which project extensions 15 on the ends of the suction boxes, there being two of these extensions on each box, the said extensions resting upon upright adjusting screws 16 extending upwardl through the bottoms of the respective soc ets, the arrangement being such that as the slide is moved back and forth longitudinally in the manner to be presently described, the ends of the boxes will be moved with it, the adjusting screws permitting the boxes to be adjusted vertically so that their proper operative relation to the forming belt may be maintained. At

- their opposite ends the boxes are formed with extensions 17 projecting respectively in sockets 18 fixed to a hanger 19 fixedly sustained from the frame bar or rail of the machine at that side, these extensions resting upon adjusting screws l9 extending upwardly through the bottoms'of the sockets and serving in a manner similar to the adjusting screws 16, to maintain the proper relation of the boxes to the travelin belt. The extensions 17 have a loose fit 1n the sockets in order to permit the boxes, when their opposite ends are moved to and fro by the slide 10, to rock horizontally about an axis, the fit of the extensions 15 at the movable ends of the boxes being likewise capable of limited play. in the'sockets 13' in order to prevent interference between the arcuate motion of the boxes at this end and the rectilinear movement of the supporting slide 10.

As a result of the construction described,- the boxes are movable at one end by the slide 10 about an axis distant from said end, and in the present instance situated at the opposite end, whereby the angular relation of the boxes to the direction of travel of the beltmay be changed. Various forms of mechanisms may be employed to efiect the back and forth movements of the slide 10, the drawings illustrating one form of such mechanism merely by way of example, which mechanism may be eration is efi'ectedvby connections with the couch roll 2. This mechanism is shown more particularly in Fig. 1 and consists of an upright actuating lever 20 pivoted near its upper end on a horizontal stud 21 projecting outwardly from the hanger 12, the upper end of the lever being provlded with a vertical slot 22 in which extends a stud 23 projecting from the side of the slide 10. At its lower end the lever is provided with a slot 24 in which extends a wrist pin 25 on a driving disk 26 rotatably mounted on the machine frame, the rotatlon of the disk causing the lower end of the lever to be vibrated back 100 and forth and imparting corresponding movements to its upper end and a like motion to the slide. The disk carries a worm cal shaft 33 mounted in bearings on the ma- 1-10' chine frame, andhaving on its upper end a bevel gear 34 with which -meshes a bevel pinion 35 on the couch roll. As a result, the

rotation of the couch roll will through the connections described, rotate the disk 26 and 11 5 vibrate the actuating lever on its pivotal axis, and this action in turn will reciprocate the slide 10 back and forth and will impart to the movable ends of the suction boxes 8 a like movement in the direction of travel of the wire belt.

By this particular form of driving mechanism, the movable ends of the boxes will be reciprocated slowly but constantly at intervals, and their angular relations to the direction of movement of the traveling belt will be correspondingly changed, the result being that the wear of the strands of wire of the belt on the upper edges of the boxes will be equalized and distributed, and the formation of grooves in the boxes prevented, thereby preventing destructive wear on the belt and prolonging the life of the same.

lVhile the advantages of my invention are fully realized in the application of the movg means to the group of boxes 8, or to a single box, and while it is not absolutely necessary for the purposes of my invention to apply the same to the other group of boxes 8, yet this may be desirable, and to effect their movementa horizontal connecting rod 36 may be employed, as shown by dotted lines in Fig. 1 to connect the slide 10 with the slide 10, one end of the rod being pivoted to the upper end of the actuating lever and its opposite end pivoted as at 37 to the slide 10, by which means the reciproeating motion of the slide 10 will be impartto the slide 10 and the group of three boxes 8 supported by this slide moved back and forth at one end similar to the movement of the other boxes,

In the foregoing description and accompanying drawings I have set forth my invention in the particular detailed form which I prefer to adopt, but it will be understood that the construction may be variously changed and modified without departing from the spirit of my invention, provided the operation will be substantially as indicated above; and further it will be understood that the invention is not limited to any particular form or construction of the parts except in so far as such limitations are specified in the claims.

7 Having thus described my invention, what I claim is: i

1. In a paper making machine, the combination of a traveling forming belt or wire to support the pulp layer, a suction' box extending transversely beneath the belt and movable at one end in the general direction of travel of the same, means for restraining the other end of the box against such movement, and means acting at said movable end of the box and operable to move it periodically.

2.v In a paper making machine, the combination of a traveling forming belt or wire to support the-pulp layer, a suction box extending beneath the same and movable at one end relatively to the belt to change its angular relation to the direction of travel, means for restraining the other end of the box against such movement, and means acting at the movable end of the box and operable to effect its relative movement periodically.

3. In a paper making machine, the combination of a traveling belt or wire to support the pulp layer, a suction box extending beneath the same, said box being supported to move at one end relatively to the belt about an axis situated at the opposite end of the box to change its angular support the pulp relation to the direction of travel, and means operable to effect the relative movement of the box periodically.

4. In a paper making machine, the combination of a traveling belt or Wire to layer, a suction box extending beneath the same at an angle to the direction of travel, said box being movable at one end relative to the belt to change its angular relation thereto,'- means for restraining the other end of the box against such movement, a vibrating member operatively connected with the movable end of the box to move the same, and means for vibrating said member.

5. In a paper making machine, the combination of a traveling belt or wire to support the pulp layer, a suction box ex tending beneath the same at an angle to the direction of travel, said box being movable at one end relatively to the belt to change its angular relation to the direction of travel, an actuating lever pivoted between its ends and operatively connected at one end with the movable end of the box, and means acting on the opposite end of the actuating lever to vibrate the same.

6. In a paper making machine, the combination of a traveling belt or wire to support the pulp layer, a suction box extending beneath the same at an angle to the direction of travel, said box being movable at one end relatively to the belt to change its angular relation to the direction of travel, an actuating lever pivoted between its ends and operatively connected at one end with the movable end of the box, a rotary driving member for vibrating the opposite end of the lever. and means for rotating said driving member.

7. In a paper making machine, the combination of a frame, a traveling belt or wire to support the pulp layer, a suction box extending beneath the belt movable at i one end in the direction of travel of the same, a support mounted on the frame and movable in the direction of travel of the belt, said support being formed, with sockets, extensions on the movable end of the box seated in said sockets, and means for moving said support periodically to change the angular relation of the box to the direction of travel of the belt.

8. In a paper making machine, the combination of a frame, a traveling belt or wire to support the pulp layer, a suction box extending beneath the belt movable at one end in the direction-of travel of the same, a support mounted on the frame and movable in the direction of travel of the belt, said support being formed with sock ets, adjusting screws mounted in the sockets, extensions on the movable end of the box sea d on the adjusting screws, and mecha ical means for moving the support its periodically to change the angular relation of the box to the direction of travel of the belt.

9. In a paper making machine, the combination of a frame, a traveling belt or Wire to support the pulp layer, a fixed support at one side of the machine pr vided With sockets, a support at the opposite side of the machine movable in the direction of travel of the belt and provided with sockets, asuction box provided at one end with extensions loosely seated in the sockets of the fixed support, and provided at its opposite end with extensions seated in the sockets of the movable support, and means for moving the movable support periodically; whereby the suction box will be moved at one end in the general direction of the travel of the belt about an axis situated at its opposite end.

10. In a paper making machine, the combination of a frame, a traveling belt or Wire to support the pulp layer, a suction box extending transversely beneath the belt and movable at one end in the direction of travel of the same, a supporting slide'for the movable end of the box mounted on the frame and movable in the direction of travel of the belt, said movable end of the box being supported by the slide and movable therewith, a stud on the slide, an upright lever pivoted between its ends to the frame and having a slot at its upper end in which the stud extends, the said lever having a slot at its lower end, a rotary driving member provided With a Wrist pin engaging in the slot in the lower end of the lever, and operating connections from the rotary driving member to the driving devices of the machine.

In testimonywhereof, I have aflixed my signature hereto. 1

GEORGE MOAULAY. 

